The NUX B-7PSM is a wireless personal in-ear monitor system with automatic RF environment scan, 5.8GHz interference-free broadcasting frequency and 24-bit / 40 kHz high-quality stereo audio transmitting. It quickly finds a clean wireless channel and automatically assigns it. The B-7PSM offers a super low latency of less than 5.5ms and has an operation range of 100 feet when unobstructed between the Receiver (RX) and Transmitter (TX). (The operation range is around 32 feet when obstructed). It’s a super light-weight wireless, mini-compact system designed to clip-on and go. The RX’s clip design can easily fit to your shirt, belt or guitar strap. With automatic frequency hopping technology, the B-7PSM system is reliable and stable while you perform on stage.